Over 2,000 songwriters have signed a petition demanding better mechanical royalties for interactive streaming from Google, Apple, Amazon, Spotify and Pandora.

The campaign has launched ahead of a court hearing in Washington today (March 8) where the Copyright Royalty Board (CRB) will determine rates for the next five years.

The tech giants are expected to argue to reduce the amount they pay, while the National Music Publisher’s Association and the Nashville Songwriters Association International will lobby for an increase.